Possible Clues:

• Chicago Museum of Science and Industry showpiece
• Early radio transmitter
• *Spark emitter at a science museum (In this answer, unscramble letters 1-7)
• It may cause sparks to fly
• Revolutionary state prepared fuel for high voltage generator
• 1891 self-named electrical invention
• Electrical device named for its inventor
• A transformer, one welcomed by upstanding group of neighbours?
• Electrical transformer
• Flashy transformer